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A kind of insulating coating for pantograph platform and preparation method thereof

A technology of insulating coatings and pantographs, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as inability to balance elasticity and toughness, poor impact resistance of paint films, and breakdown of vehicles, etc., to achieve Excellent insulation and impact resistance, excellent wear resistance and corrosion resistance, overall uniform effect

Active Publication Date: 2019-01-08
三河亮克威泽工业涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These coatings have the problem of not being able to balance elasticity and toughness. The paint film with good elasticity has poor impact resistance and is easy to be broken down by machinery and cause vehicle damage.

Method used

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  • A kind of insulating coating for pantograph platform and preparation method thereof
  • A kind of insulating coating for pantograph platform and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] A method for preparing the above-mentioned insulating coating for a pantograph platform includes:

[0022] S1 Preparation of the first mixed component

[0023] Stir and mix the polyaspartate resin, electronic grade mica powder, talc powder, pigment, rheology aid, defoamer, dispersant, flame retardant and silicon powder to obtain the first mixed component uniformly. Specifically, add polyaspartate resin, electronic grade mica powder, talc powder, pigments, rheology additives, defoamers, dispersants, flame retardants and silicon micropowders to a high-speed mixer, and at room temperature After stirring at a speed of 800-1000r / min for 15-20min, increase the speed to 2200-2500r / min, continue to stir and disperse for 20-40min, until the fineness is ≤30μm to obtain the first mixed component.

[0024] S2 Preparation of the second mixed component

[0025] The polyisocyanate elastic curing agent and the HDI trimer curing agent are stirred and mixed uniformly to obtain the second mixed ...

Embodiment 1

[0031] This embodiment provides an insulating coating for a pantograph platform, which is prepared by the following steps:

[0032] Preparation of the first mixed component: weigh 80kg of polyaspartate resin, 40kg of electronic grade mica powder, 36kg of talc, 10kg of titanium dioxide, 8kg of silicone additives, 2kg of silicone defoamer, and polycarboxylate Add 2kg, 2kg of silicon-based flame retardant and 20kg of silicon micropowder to the high-speed mixer, stir at 800r / min for 15min at room temperature, increase the speed to 2500r / min, continue to stir and disperse for 30min, until the fineness is ≤30μm, The first mixed component is obtained.

[0033] Preparation of the second mixed component: Weigh 280 kg of polyisocyanate elastic curing agent and 120 kg of HDI trimer curing agent, add them to a high-speed mixer, and stir at 600 r / min for 15 minutes at room temperature to obtain the second mixed component.

[0034] Insulating coating preparation: adding the above-mentioned first ...

Embodiment 2

[0036] This embodiment provides an insulating coating for a pantograph platform, which is prepared by the following steps:

[0037] Preparation of the first mixed component: weigh out 90kg of polyaspartate resin, 36kg of electronic grade mica powder, 34kg of talc, 16kg of titanium dioxide, 4kg of silicone additives, 1kg of silicone defoamer, and 1kg of polyphosphate 2. Add 2kg of silicon-based flame retardant and 16kg of silicon micropowder to the high-speed mixer, stir at 800r / min for 20min at room temperature, increase the speed to 2200r / min, continue to stir and disperse for 40min, until the fineness is ≤30μm. The first mixed component.

[0038] Preparation of the second mixed component: weigh 280 kg of polyisocyanate elastic curing agent and 120 kg of HDI trimer curing agent, add them to a high-speed mixer, and stir at 800 r / min for 15 minutes at room temperature to obtain the second mixed component.

[0039] Insulating coating preparation: adding the above-mentioned first mixin...

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Abstract

The invention discloses an insulating coating for a pantograph platform and a preparation method thereof, and belongs to the field of coatings. The insulating painting is prepared by mixing a first mixing component and a second mixing component at the mass ratio of (1.8-2.2):1; the first mixing component comprises polyaspartic ester resin, electronic grade mica powder, talcum powder, a pigment, a rheological agent, a defoaming agent, an dispersing agent, a fire retardant and a silica powder according to mass percent; the second mixing component comprises a polyisocyanate elastic curing agent and an HDI tripolymer curing agent. Due to the adoption of the proper materials at the proper ratios, the obtained insulating coating shows more excellent durability, corrosion resistance, tensile strength, insulativity and shock resistance. The preparation method of the insulating coating uses a mode of mixing the materials step by step, is simple in operation, low in equipment requirement and suitable for large-scale industrial production; the obtained insulating coating is uniform in texture and excellent in various performance, and meets various requirements of the pantograph platform on the insulating coating very well.

Description

Technical field [0001] The invention relates to the field of coatings, in particular to an insulating coating used for a pantograph platform and a preparation method thereof. Background technique [0002] In accordance with the requirements for insulating coatings in the area of ​​the pantograph platform on the roof of electric vehicles such as rail vehicles, the coating should not only have excellent electrical insulation and flame resistance, but also have good adhesion and hardly generate heat. Expansion, cold shrinkage and hardness changes, good elasticity, high elongation, excellent conformability when the substrate changes, good UV resistance, corrosion resistance, abrasion resistance and destructive resistance. The thickness of the insulating coating after painting should reach 3-5mm, which has high voltage resistance. [0003] The coatings currently used for pantograph platforms are mostly polyurethane and epoxy paints. These coatings have the problem of not being able to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C09D5/08C09D5/25C09D7/61
CPCC08K2201/014C08L2205/03C09D5/08C09D7/61C09D175/02C08L33/02C08K13/02C08K3/34C08K3/36
Inventor 张金玉朱晖马生春
Owner 三河亮克威泽工业涂料有限公司
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